Knitting machine



Oct. 21, 1941. 1. H. c. GREEN ETAI. 2,260,020

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' KNITTING MACHINE I Filed March 4, 1940 l4 Sheets-Sheet 8 I I I I I I II I I Byfib Arry Oct. 21, 1941.

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Oct. 21, 1941.

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' KNITTING MACHINE File March 4, 1940 14 Sheets-Sheet 14 .J MEI/T0133: Ifix/26176169952111,

I i s weamikflzmz ing a'reverse or Patented Oct. 21, 1941 UNITED STATEKNITTING momma Isaac H. 0. Green,

lmsetts Central Falls, and Eugene St. Pierre, Pawtucket, B. 1., hillCompany, Central Falls, B. 1., M w

assignors to Hemp a corporation of Application March 4, 1940, Serial No.322,140

'2 Claims. (or. 66-41) This case involves an invention in certainmechanism as applied to knitting machines for incorporating elastic yarnand for producing a selvage in which elastic is incorporated along witha non-elastic yarn in a particular manner more orless as disclosed andclaimed in copending aplication Serial #295,095, filed September 15,1939.

In the figures of the drawings: Fig. 1 is an elevation of part of aknitting ma-. chine to which the invention has been applied;

Fig.2 is an elevation showing a needle cyl- Fig. 17 is a section takenon Fig. 16;

Fig. 18 is a detail view showing the elastic garn knitting cam and partof the control there- Fig.'l9- is a section taken'on the line l9l9,

Fig. 16;

Fig. 20 is a section taken through the needle cylinder and at a levelbelow the needle cam inder and sinker assembly as well as some of thecams and their control along with selecting means as applied to one formof the invention; Fig. 3 is a section taken through the needle cylinderand showing in plan view many of. the cams functioning upon needlebutts;

Fig. 4 is a detail of a knitting'cam and part of its controlling means,this knitting cam being used to draw'down needles at the elastic yarnfeed;

Fig. 5 is a detail showing certain of the connections to the cam shownin Fig. 4 for withdrawing the same;

Fig. 6 is a section taken through a part of the needle cylinder andshowing a jack dividing or selecting cam, its support and part of thecontrolling means therefor;

Fig. 'l is an elevation showing part of the cylinder and the mechanismof Fig. 6 as seen from the front of the machine;

Fig. 8 is a detail view-of stopping or limiting mear ils applicable tothe cam shown in Figs. 6 and Fig. 9 is a plan of the sinker cap, partsbeing cut away so as to show some of the detail of the sinker cams; I a

Fig. 10 is a section taken through the line lil- -lll, Fig. 9. a

Fig. 11 is a detail of part of the sinker cap assembly adjacent theauxiliary sinker cam at this section llI-lll;

Fig. 12 is another detail of the sinker cap showing how the same is cutaway adjacent the auxiliary sinker cam;

Fig. 13 is 'a diagrammatic view showing cams and needle and jack buttpaths during knitting in which elastic is being incorporated in afabric;

Fig. 14 is a similar diagrammatic view, but sl gwing knitting with anon-elastic yarn and o amentation by needle wrapping;

similar diagrammatic view showcloclrwise stroke as'i'n the heel or toeof astocking:

' Fig. 16 is a section needle cylinder and showing certain cams whichfunction upon needle butts according toa modified form of the invention;1

1 18.15 isa taken through part of a 2 returning jacks they have beenactuated by the first group of Fig. 24 is a sectio carrying plate andshowing selecting-means as. applicable to jacks, also part of thecontrol therefor;

Fig. 21 is an elevation'showing the parts illustrated in Fig. as seenfrom the front of the machine; 1 Fig. 22 isaplanofthe ing the generalarrangement of sinker cam can showsinker cams and .control therefor;

Fig. 23 is an elevational view of a fragment of the sinker cam capassembly adjacent the" auxiliary sinker cam: at line 23-23; taken on theline Fig. 22; a

Fig. 25 is a section taken on the line 25-28, Fig. 22;

Fig. 26 is a section taken just in advance of the main yarn feed andshowing su porting means and certain cams including both movable andfixed jack selecting and controlling cams;

Fig. 27 is a similar section but taken at a point in advance of thefirst jack selecting means in a modified form of the invention, andillustrating special control for some of the jack selecting andcontrolling cams;

Fig. 28 is a detail view of means for controlling plain sole cams;

Fig. 29 is a detail of a-movable cam adjacent I 'the main yarn feed,said cam being mounted in a position as illustrated in Fig. 26;

Fig. 30 is a detail of a movable cam adjacent but below the camillustrated in Fig. 29;

Figs. 31 and 32 are n'iovable cams adapted to function. on jack butts"in advance of the main feeding station to control knitting or tucking;

Fig. 33 is a detail of a camsimilar to that illustrated in Fig. 30, butoperative between the first and second selecting means;

Fig. 34 is a detail of a movable cam functioning along withthe camillustrated in Fig. 33, but adapted to raise jacks to a sligh y helevation;-

Fi'g. 35. ha detail of a plain sole cam;

Figs. 36 and 37 are details of a fixed cam for to non-selected positionafter selecting means;

Fig. 38 is a diagrammatic view showing cams and the needleand Jack buttpaths as incorporating elastic according to the modified form of theinvention; and

Fig.39 is a similar 'l u tic the line 11-11, I

'heel or toe.

, knitted independently needles.

" sinkers being slidable in a sinker head 5.

- station or mouthpiece.

showing knitting during a reverse stroke in the In the incorporation ofelastic yarn according to St. Pierre Patent.

#2,131,'l20, the elastic is at a separate feeding station and uponspaced needles, preferably every other needle. It is. floated behindintervening A non-elastic yarn is fed at the socalled 'main yarn feedingstation and is knitted on all needles at that point. In the constructionof the edge of a fabric such as a stocking top,

several different types of edgehave been made, one so-called tuck" edgehas been found very satisfactory, said edge-and general method ofproducing the same being described and claimedin co-pending applicationSerial #295,095.

To make this tuck edge along with continuing fabric as in Patent#2,131,720 very specialized mechanism has been developed. In one form ofthe invention herein illustrated and described by way of example, aBanner 8-step wrap machine has been constructed to knit such an edge,and in'a secondform herein illustrated as a modification, a so-calledl9-step Banner wrap machine is illustrated. It is to be understood thatsuch v an edge may be knitted without knitting a wrappattern either inthe edge or the continuing fabric. In such event so muchof the mechanismherein illustrated as is necessary to that end may be employed. Theparticular combina tion does, however, make use of certain of the wrapcontrolling devices giving to them the dual function of serving toproduce wrap omamentation, and at appropriate times, to impart thenecessary needle control for incorporating the elastic eitherv in theknitted fabric such as illustrated in Patent #2,131,720 or in the edgeaccording to the application Serial #295,095.

Referring to the figures of the drawings, such as Figs. 1, 2-and 3,enough of a typical hosiery machine has been shown to illustrate theimportant features of the invention. A frame I carries a base 2 in whichis adapted to rotate a needle cylinder 3. This needle cylinder carriesthe usual complement of needles, preferably latch needles although othertypes such as spring heard or sliding latch needles may be employed.

drawn from engagement with needle butts or may be allowed to engagethose butts in which event it will raise butts to a clearing position.The cam 18 has projecting wings I! and I9 and a v-shaped projection itbetween the two wings. The front stitch cam II is much thinner thanusual to allow the wing to be positioned in front of center raise caml4.

The needles, one of which is indicated at 2., Figs. 13 and 14, havejacks 2| beneath them, those jacks having a plurality of selecting butts22, in this instanceeight such selecting butts being available sincethis is what is termed an 8-step machine. These butts 22 are removableat will as by breaking. The topmost one of these selecting butts issquare or rectangular in shape The top butts are of two lengths, shortbutts 23 alternating with long butts 24. A butt 2| common to all jacksserves to lower them upon engagement with certain cams. Adjacent theupper end of each jack is a masterbutt "which is for the purpose ofimparting greater movement to movementsimparted through butts 22, 23 or24.

The needles havebutts 21, there being a moreor less equal division oflong and short butt needles for the usual purpose.

A plurality of selectmgcams or plungers 28 are slidableto and fromengagement with butts 22, 23 or 24, these plungers. being slightlyinclined and adapted to raise jacks, butts of which have been engaged,to such a position that the master butt 26 will beraised by a cam 29,Fig. 13, the primary purpose of this cam 29 being to elevate selectedneedles so that they may take a wrap yarn or yarns w fed through wrapyarn'feeding means generally indicated at 80, Fig. 14. This wrapyamfe'eding means 30 is preferably of a type illustrated in UnitedStates Patent #1,702,808 but may be of any convenient and effectiveconstruction. I

A main knitting yarn which is a non elastic yarn is shown at ,1, Fig.13, and feeds through Slnkers of conventional type are adapted to becontrolled by certain cams in a cam cap 4, said A carrier ring 0 ofusual type is extended at one side to mount several y'arnfeeding leverswhich are controlled to drop to and be raised fromyarn feeding positionat a so-called main feeding These yarn levers are controlled-asdescribed in'United States Patent #933,443. A main cam shaft 1carriesseveral drums thereon on whicharearranged cams for I controllingthe functions of the machine throughout the cycle ofknitting a stocking.Only such cams as are employed in the operation of the mechanismhereindescribed willbe mentioned.

A main cam block ted by'numeral 0 is mounted on a cam plate 9 supportedon a post II. The main cam block is of the usual construction in that ithas a front stitch cam ll, rear stitch cam l2, center guard cam I3 and acenter raise cam l4, this center raise cam and the front stitch cam l'lbeing of rather different construction from that, usually employed.

These cams, probably best shown in Figs; 14 and 15, are supplemented bya raise cam 15 and a cam IS, the purpose ofwhich will be more fullydescribed in due, course. The front stitch cam II is movable so that thesame maybe withone of several yarn feeding guides or levers II. Anelastic yarn feeding finger 32 is adapted to be moved to and fromfeeding position and feeds the elastic yarn e. This finger I2 is'fixedat the end of a lever 33 pivoted at 34 and spring pressed into a loweror feeding position, but movable by a contacting lever "and othermechanism controllable from certain ca'm means upon the machine, theremainder of this mechanism not being illustrated since it is shown inco-pending application Serial No. 100,908, filed September 15, 1936.

The selecting cams orplungers 20 are controlled at times by one seriesof discs having pattern formations thereon and at other times by anothersuch series of discs. The two groups of these discsare indicated at IIand I], Fig. 1. They are mounted for rotation upon a drum II which isratcheted by suitable ratcheting means to efiect the necessary changesin the placement 'of the cams 2a to accomplish the knitting of theelastic top, and of the wrap pattern inthe leg or other'part. ofastocking.- One group of these cams is employed throughout the knittingof the elastic top and another group in the knitting of thepattern inthe leg of I the stocking, this all the elastic yarn cam 39, Fig. 13.

dies would clear and knit.

' and those. not so raised will take yarn,

' that element tocams on any suitable drum on the machine convenient.

, needles at the main beneath plate 9.

lug 54 which is a part of.

in their hooks. Those needles raised to a height dictated by cam 29clear their latches while needles which are not raised by the jackselection neither clear their latches nor do they take the elastic yarne.

Those needles which butts are guided down by the auxiliary stitchNaturally all needles are drawn down by this stitch cam 39, but'theintermediate needles which were not raised by the jacks are merely drawndown inean idle movement since they did not clear their latches. ticstitches have been drawn needles are raised by the V-shaped projection|9 on the cam l6 and thereafter by'the wing l8 which is at a common vlevel with the front edge of cam l4.

Neither of. cams l8 nor. |4 raises needles high enough for the latchesthereof to'be cleared. The front stitch cam would perform that functionif it were in place, however, in order to knit tuck stitches at the edgeof the fabric, or at any other place, that cam must not be in positionor all nee- Taking advantage of the long butts 24 on the jacks, aselecting or guiding cam 49, Fig. 13, is movably mounted to be projectedin for engagement the jacks for raising'them and their attendant needlesto a latch-clearing position, that is, at least as high as they would beraised by the upper point of the front stitch cam That is, according tothe arrangement of the long butts 24, any desired needles may be raisedfor knitting but will not knit. They will tuck the yarn thus taken, theextent of the tucking being dependent upon the time during which cam His withdrawn.

Referring to Figs. 2, 3, 4,5, 13, 14 and 15, the auxiliary i h drawingcam 39 is fixed to a car"- rier 6| which is in turn slidable in thebracket M. This carrier 4| has one side flattened to align with theinclined edge 46 of the bracket. this serving to maintain the cam at thedesired angle. At the outer end of carrier 4| is an anguiar piece 44having'a projection 45. A spring 46 connects to a projection on thebracket and to another depending extension 41 on the angular piece 44normally tending to maintain the cam inwardly against the cylinder; Abell crank hav; ing arm 48, 49 and 59 pivots at and by means of thedepending arm 56 which-contactsthe projection 45, is effective towithdraw cam 39 when desired. Movement is imparted to the bell crank ithe butts 24 which are present oniacks beneath do take the elastic yarnare caused to draw it into knitted stitches as their After the elas- 52is adapted to contact against this stop screw 56 and thereby limit theinward movement of cam 46 against the cylinder. A link 59 connects tothe outer, end of lever arm 58 and imparts movement to the lever andthus to the cam for withdrawing the same or allowing it to move in forcontacting jack butts, all in accordance with said cams on a cam drumhereinafter to be described.

Now referring to Figs.

58 of the lever 1, 2 and 9 through 12, a certain amount of the sinkerand sinker cam assembly has been shown mainly for illustrating thecontrol of sinkers at the auxiliary orelastic yarn feeding side of themachine. Sinkers 60 of more or less the-usual type are slidable insinker head 5 and controllable by a plurality of cams in are providedthe sinker cams 64 and 65 and a center sinker cam 66. The side cams 64and 65 with said butts on machine frame. At the other end of through alink 5| and connect! as leading from a the-drum which may be bracket 55,Figs-6, 7 and 8. Ina depending part of this bracket is threaded a stopscrew 56 locked or at least attached to a cam 66 whenever stitch cam cam89, sinker cam 66 nor sinker-wave is set up at the sinker cam capgenerally designated by numeral 4. These cams include side sinker cams6| and 62 and the center sinker cam 63 functioning at the main feedingstation. At the auxiliary feed at' which elastic yarn is introduced,there the sinker cam 66 is are fixed in position, but

66 is attached at the movable. This sinker cam inner end of a slide 61adapted to move laterally of the machine and having at its outer end adepending lug 68. The slide 61 isurged laterally inwardby a spring 59.Movement is limited by a pin I0 slidable in-a cap 12. The upwardlyextending arm 48 of the bell crank previously described withrespect toFig. ,4 is bent laterally as at 13, Fig. 2, and engages lug 68 forwithdrawing the center sinker 391s moved to active position. Thisassures that a sinker wave occurs concurrently with the needle wave, andvice versa.

Referring to and also for the jack cam 46 have been shown. The link 5|extends downwardly to connect at one end of a lever I4 rojected at theupper end of a bracket 15 ich is in turn attached to extension 16 fromthe lever 14 is pivoted a depending bar engageable with a cam 18 on drum19. When the end of bar I1 drops from the cam I8, the-bell crank havinglevers 46, 49 and 581s swung in such .adirection' that cam 39 is pulledoutwardly and sinker cam 66 is allowed to move in so that neither aneedle'wave elastic yarn knitting point. when the bar moves upwardly ona cam the reverse takes place.

Referring to Figs. 1 and 6, link 59 for controlling cam 40 connects toone arm 89 of a bell crank lever, the other arm 8| of said leverconnecting to a depending link or-rod 82 which in end to a lever 83 emon drum '85. When turn connects at its lower gageable with .a cam 84this cam 84 raisesthe end of lever 83, cam 40' moves inwardly to engagejack butts. Upon fall-- ing from cam 84, the said cam 40 moves out-.wardly under the influence of a spring (not shown). Of course, at thattime, front stitch cam II will have been moved into place by mechanismnot shown, but controlled from a cam on one of the drums illustrated inFig. Operation Now referring to Figs. 1a, .14 and 15 the 'operation ofthe machine will be described in-three diflerent phases of the slot Hand limited by a second slot of predetermined length in the adjustableFig. 1' the control for the stitch' the auxiliary or I 28 merely passalong Corresponding needles they 2,200,020 I needle and Jack buttpathways for knitting in an I moved down by the wing cam I'I. Neithermoveelastic top are shown. The pathway l! is that ment has any effectupon the'needles themselves.

of butts 23 and 24 on the lacks 2|, those jacks first having been movedupwardly by a cam 8'! shown in dotted lines and operable on the masterbutts 26. By that means all Jacks are presented to the plungers 28. Thetopmost plunger is set to engage long butts 24 -.and raise them to theelevation ll whichalso raises the butts 28 to an elevation 89 therebypermitting cam 20 to raise those jacks to a. height sufllcient forcausing the needles to cleartheir latches and to take the yarn e intheir hooks. The needle butts 21 rise in the pathway as and arethereafter drawn down by cam It to a-stitch drawing level. Jacks havingbutts 23 not aflected by the topmost plunger in pathway 84 until pusheddownwardly along with the long butt jacks in a pathway ll. ,The butts 26incidentally move down under cam'ii as shown. The Jacks having longbutts 24 will next be. contacted by the dividing cam 44 and will beraised-in a pathway 92. will rise up in pathway 83 while the remainingneedles are raised-to a lesser height since their butts merely engagecam ll and-wing cam Idand along the top of'cam I4, needles taking yam atthat height, but not clearing their latches. Needles which did cleartheir latches are drawn down by cams I3 and I2, and actually knit. Thecam II merely raises needles to the usual raise cam level. All lacksare. pushed down to lowermost position In clockwise strokes needle.butts move along the raisecam ",passupcam I2, thenbeneathcam l3 and downbelow cam II taking yarn and drawing stitches. The v-shaped Drolection-It -then moves the needles up to a pathway IIII and wing cam I! gives anadditional movement to the ordinary raise came level. In the oppositedirection the butts would merely move along raise cam II from the leftto the right, beneath cam 85 and over the cam I6 striking cam II bymeans ofv which'latches would be cleared, and thereas the needles moveunder stitch -cam I2'and butts 23 and 24 pass along at a level 84 untilcam 81 again becomes eflectlve. A cam'." has been shown in- I theseilgures and is employed during needle wrapping as is illustrated in Fig.14.

In .Fig. 14 knitting at the main side only in" A conjunction with needlewrapping is illustrated.

I All plungers 2! may be employed-at some time'in the wrapping andimpart eight steps of selection,

Jack's first being raised by the cam II as previously describedwhereupon, plungers 2. effect certain selections and master cam 2!acting upon master butts 2' will raise selected needles in a pathway 0.6so that a wrap yarn in will be taken .in the hooks of appropriateneedles. Wing cam I1 pushes Jacks downwardly to a lowermost level II.,The butts of selected needles move along at an uppermost level untilthey reach the dependv ing Projection 28" of .the cam II and are-moveddownwardlyso as to pass beneath center guard cam I3. Incidentally, theyare moved low enough sothat they are first raised slightly by cam beforestriking cam IS. The butts of nonselected needles move along at a levelit until they contact cam I I whereupon they are raised to clear theirlatches. They Join the upper group at A projection us is III on a bellcrank lever pivoted at III on an angular upright III. This bell crankhas-a horizontal arm HI connected to a depending I24 by means of whichthe bell crank is moved and the cam withdrawn to an inactive position atafter drawing yarn and knitting beneath cams I3 and I2.

Modification dle cylinder Ill carries a cam block III having a frontstitch cam' I44. top center guard cam I05 and a rear stitchcam I06. Thecenter raise cam I, Fig. 38,-is of slightly diflerent construction fromthat usually employed and has a supplemental eam Ill movably mounted andcontrolled by suitable mechanism to be moved in and out at desiredtimes. The operation and function of this cam will be more thoroughlydescribed at a later point in the specification.

. A bracket III, Figs. l6. l7 and 18, is mounted on cam plate III andcarries a slideIIO to the inner end of-which is fastened an elasticstitch drawing cam III. This slide is movable inwardly and outwardlyhaving at itsouter end a depending ex'tensionII2 being connected by aspring II:

'to a fixed part-of the bracket! so that nornially the slide and cam IIIwill be moved inwardly against the needle cylinder. A stop screw "4 isadjustable for limiting inward movement. n aged by a depending armpredetermined times. A third arm' I2I extends upwardly and is employedfor the purpose of conthispointandalineedlesarecausedtoknitas' theirbutts pass beneath cams I3 and I2. Then needles rise to the-ordinarytheir buttsriseupfcain II.

Referring. to Fig: 15, needle and lack butt P ths .are shown in-areverse stroke of knitting lainthe heel or toe. For simplicity ofillustration short butt pathways only are shown. a The raise cam levelas ,jacks do not play an elective part in this knitting and would passalong at a lowermost level V except for the influence of the cam l'|.That cam does aifect the lacks since master. butts 2i contact the cam ineither direction. In reverse strokes these bum-move up I! and aremoved'downwar'dlyby a cooperatcam Instrckesintheoppuitedirection #0.would butts, som

ride up the camll would-be-N-butt trollingasinkercamaswiilbeexplalnedinmore detallinduecourie.

In 20 and 21 parts for operating upon; Jacks beneath needlu have beenillustrated. both the Jacks and'thejack operating devices beinggenerally located above the circular base of the machine and beneath thecamplate. III. ln l 'lg. 38 a needle I22 has a butt I23. These needles.are preferably of the usual latch type and are divided into two groups01' long and shortbutts asisthe common practice. Beneath'each needle.

Isa jack I24 having amaster butt I28 and a plurality of selecting butts.I28. The butts I2lare removable'at will and may be broken away orotherwise detached insetting up a pattern. Each of the Jacks has asquare butt above the selective .vlngshortbuttsfl'flandothershavingiongbutts I28. Iftheelasticis-mbein-'corporatedsccordingtoa1.xidi'visiomofne'edim. alternate needletwilihavelacks withalong I2! while intermediate needles will have the oppositetype of jack, that is, one with a short butt- I21. I

Since this machine is a be nineteen of the butts I26. of needles as fordetermining the pattern in the wrap areas, series of selecting plungersI29 and I30 are spaced as shown in Fig. 38. The employment of two setsof these plungers makes possible the knitting of "color side of colorand color within color patterns. Briefly, these sets of plungers andassociated cams are used for the selecting of needles which are to takeelastic yarn at the auxiliary side and to determine the knitting of tuckstitches at the edge of the fabric as at the selvage or adjacentthereto.

First in selecting jacks and thereby needles to take an elastic yarn efed at a so-called auxiliary feeding station, the topmost plunger I29 isused and functions upon the appropriate butt I26 on jacks of needles tobe selected raising those jacks so that their master butts I25 will beengaged and raised by a cam I3I which normally isemployed to raise jacksand needles for determining wrap areas. This cam I3I is further shown inFigs. 20, 21, 27 and 33. The cam I3I is slidable outwardly to someextent, but is normally spring pressed inwardly by the spring I32. Theoutward movement is merely for safety in the event of improper contactwith passing butts, and this cam might normally be considered as a fixedcam in contrast to other cams which are purposely movabl and areautomatically so manipulated. For example, cam I33 slightly above and tothe right, Fig. 38, is slidable along the side 19'-step type there willof the cam I3I but is automatically moved to and from butt engagingposition at the proper intervals in the cycle of knitting.

In the selecting Cam I33 has a stem I34 and is maintained in slidablerelationship by a shoulder screw I35 engageable, one-half in a slot inthe stem of 'the cam I3I and the other half in the stem I34 of cam I33.A spring (not shown) will normally urge thiscam I33 inwardly toward theneedle circle, the cam being drawn outwardly by a depending arm -I36,Figs. 21, 2'1 and 34. This arm I36 is fixed to a spindle I31 pivoted inbearings in the upstanding lugs or cars I38 and I39 which are part of. abracket I40. Figs. 21 and 2'7. The spindle I 31 extends angularly as atI, this extension connecting at I42 to a depending link I43. The arm I36engages an angular projection I44 which is an integral part of the camstem I34.

The cam I33 is employed during the knitting of elastic only and servesto raise needles which are to take the elastic to a. slightly greaterheight than that to which they would be raised by cam I 3I alone. Thecam I3I functions without cam I33 except during the knitting of elastic,that is, during the knitting of wrap yarn patterning.

Referring to Figs. 20, 21 and 27, additional controlling means with thatfor cams I3I and I33 is shown. This control is for the top plunger I29.

That plunger has an extension I45 which is engaged by the end of adepending arm I46 of a bell crank lever pivoted at I41. This bell crankalso has a more or less horizontally disposed arm I48 and is in turnconnected to the link I411. Upward movements of the link will withdrawboth plunger I29 and cam I33; movements in the oppcsite direction allowthe plunger and cam to move inwardly for the engagement of such jackbutts as are designed to contact them. The plunger I29 tends to be movedinwardly against the cylinder by a spring (not shown).

I50 and I52 both being grooved at the inner or adjacent sides and beingretainedin the above mentioned slot by a; shoulder screw I53. These camsare likewise movable inwardly to butt engaging position and outwardly toan inactive position, the cam I49 functioning during wrapping along withanother cam I54. The cam I54 raises needles which have been selected byplungers I30, that is, completes the second stage of selection asemployed for such purposes as knitting color within color patterns. Thecam I49 is a latch clearing cam for all needles during the knitting ofwrap patterns. This cam ismovable inwardly and outwardly at desiredtimes and assures that all needles clear after wrapping has taken placeand prior to taking yarn beneath the center cam I05 and knitting beneathstitch cam I06. Ob-

viously the cam I49 will not be in active position during knitting. thelastic top; Cam I54 is springv pressed and is what might normally betermed a fixed cam similar tothe cam I3I. The cam I5I is controlled tobe radially movable to and from butt engaging position and functionsalong with two other cams I55 and -I 56, Figs. 20, 21, 26, 31, 32 and38. Cams I55 and I56 are radially slidable in a bracket I51 at the upperend of a post I58. The cam I55 is radially movable by a lever I59pivoted at I60 and further connected to the cam stem bya screw I6I.Movements of the lever I59 draw the cam outwardly or allow it to moveinwardly at appropriate times. The cam I56 has a spring I62 whichconnects at the outer endof the cam stem and tends to urge that caminwardly. The cam I55 connects to the cam I56 by means of a dependingextension I63 at its outer end engageable in a notch at the outer end ofthe stem of cam I 56. Thus the spring I62 tends to urge both camsinwardly and the lever I59 serves to pull both of them outwardly whenthat action is desired.

A wire link I'64 is connected to lever I59 and also to one arm I65 of abell crank which pivots at I66 and has a second arm I6'I connecting to adepending link I68. Movements of this bell crank will withdraw the twocams I 55 and I56 'or allow them to be moved inwardly to butt engagingposition. Cam I55 merely serves as .a leveling cam acting upon butts I27and I28 for that purpose. Cam I 56 is similar to the plungers' I29 andI30 and engages the top selecting butts I26 which were engaged by theuppermost plunger I29 thereby selectingjacks I24 beneath those needleswhich are to be raised at the main cam block for taking yarn andknitting during the production of a tuck top or other tuck area in theelastic portions of a fabric. Such lacks as are selected by the cam I56will be raised to a height so that master butts I25 will engage cam I5I,this latter cam having been moved inwardly at that time, and therebyraise needles to aclearstitch cam I 08.

- at desired times.

are not in position at any other part of the kniting.

Cams and "I, Fig. 38, are merely employed as jack raise cams while thecam I I2 is for the purpose of pushing jacks downwardly to a lowermostlevel prior to a time when they would be pushed down by needles knittingunder The cam I13, Figs. 36, 37 and 38, is a fixed cam and serves thepurpose of pushing jacks downwardly after they have completed theselection and raising of needle at the first station, that is, byplungers I29 and cams I3I and I33. This cam functions both during theknitting of elastic work and during wrap patterning.

Referring to Figs. 28, and 38, cams I14 and patterning as in thehigh-splice or sole and instep areas to inhibit the knitting of apattern in the high splice and sole. on long butts I28 and push downcertain selected -jacks before they may contact either of cams I 3| orI54. These cams I14 and I15 have stems I18 and I" which have projectionsI18 and I19 engageable by levers I and .I8I and which are automaticallymoved so as to hold these plain sole cams outwardly except at theparticular phases in the knitting cycle at which they are to function.Their action is well-known and need not be described in detail in thiscase.

Now referring to Figs. 16, 19, 38 and 39-, cam I 08 is slidable inwardlyand outwardly on the cam I01, having a stem at I82 with a pin I83projecting upwardly at the outer end of that stem and to which isconnected a spring I84 under tension and connected to a hook I85 fixedto top center cam I05. A second stem or screw I88 projects downwardlyand is engaged by the end Now referring to Figs. 22-25, the sinker capI90 has sinker cams I92, I93 and a center sinker cam I94 at the mainside of the machine, these being the usual cams employed. The secondsinker cam I95 is pivoted at I98 and has an extending arm i88 to a fixedpart of the sinker cap mechanism so that, in effect, this is a sort offiopper cam which may be moved inwardly by means of a I contact elementI99 engageable with a pin 200 in an extension 20I of the cam itself.These parts are also common to the Banner 19-step wrap machine and theirfunction is well understood. At the elastic yarn feed the sinker cap issupplemented by ,a plate 202 beneath which slides a stem 203 carrying atits inner end an auxiliary center sinker cam 204. At either side of thiscam are fixed sinker cams 205 and 208.

The ends of the center sinker cam 204 are guided by extensions or plates201- and 208, these being fixed to maintain sinkers downwardly in theirslots since a considerable part of the cap itself is cut away at thisparticular point. A spring 209 urges the stem 203 inwardly, it beingpulled outwardly at the desired times by contact of the lever I2I', Fig.17, with a lug 2I0 at the end These cams function I9! connected by meansof a spring of the cam stem, the action at this point being practicallyidentical with that previously described with respect to similar partsperforming a similar function in the first described form of theinvention. Of course, the cam 204 is moved outwardly to active positionduring the knitting of the elastic yarn, butis allowed to move inwardlyat other times.

I I5 are plain sole cams and work only during .dependent elastic yarnstitches.

Operation Now referring to Figs. 38 and 39, a brief discussion of theoperation will be given, this being specific to theform described as amodification. In Fig. 38-the pathways of needle and jack butts have beenshown as when. knitting an elastic top and tucking atcertain walesduring that process. The jack butts I25 are levelled by the raise cam II0 and the plunger I29 put in position to engage such of the butts I28as pass it; jacks affected thereby will be raised from a pathway 2 to apathway 2I2 whereupon the cams. I3I and I33 will elevate those selectediacks to a considerably greater height, needles being raisedcorrespondingly to the pathway 2I3. This pathway 2I3 assures that theelastic yarn e will be taken in the hooks of needles. Cam I3I issuflicient to raise needles to a height for clearing latches, but sincethe elastic yarn is preferably fed at a relatively high level, cam I33imparts the additional movement necessary to take the elastic'yarn atthat relatively elevated position. The cam I 33, as has been described,is movable and is employed for the purpose above explained. Duringordinary knitting at which a wrap pattern is being made cam I33 will bewithdrawn.

Needles that have taken the elastic yarn are drawn down by the cam I I Iand knit drawing in- The .other needles which were merely moving along'at a raise cam level as determined by the cam 2 move down this cam III,but have not taken yarn nor cleared their latches so that this is moreor less an idle movement. Of course, the same control which moved stitchcam III into an effective position has drawn the auxiliary sinker cam204 out so-that a sinker wave is set up along with cooperating stitchwave. After these elastic stitches are drawn cam 2I5 immediately raisesall needles to a raise cam level at which they move along beneath camI05 until they contact the stitch cam I 08, except for the fact that intucking, certain needles are raised to a latch clearing and yarn takinglevel 2I8, this being done by jack control as will be presentlydescribed. The plungers I30 will not be in position for affecting jacksduring the knitting of the elastic top and cam I54, although the same isin active position, will have no effect since no jacks are raised bysaid plungers. The cams I55, I58 and I5I will be moved inwardly toactive position, cam I08 being withdrawn. The cam I'II raises jacks andlevels them prior to selection by the cam I58. That selection is similarto the selection determined by the plunger I29. The cam I49 which isemployed during wrap stripe knitting only and which is a standard partof Banner 19-step wrap machines is withdrawn by mechanism not shownherein. Those jacks selected by the cam I58 are-raised by the mastercamI5I thereby elevating needles so that their butts travel in the pathway2I8. Those needles thus raised will take a main knitting yarn y and willknit. The remaining needles also take the yarn,

but since they did not clear their latches, will merely tuck. Thistucking will continue so long

